Which Situation Below Best Exemplifies the Tenet of Social Impact

Which situation below best exemplifies the tenet of social impact theory that strength is directly related to conformity?

A) When Adam is with his "slacker" friends he doesn't take school seriously; when he's at home alone,he studies for hours on end.
B) When Jason's friends use subtle influence attempts,he conforms; when they use coercive tactics,he resists them.
C) One-on-one,Melissa will talk a blue streak,but when she's in a group she's very quiet.
D) When eating with strangers,Suzie will talk with her mouth full,but not when eating with her friends.
E) When Belinda is with her hard partying friends she tends to be loud and outgoing,but when she is with her parents she tends to be quiet and reserved.